Allen-Bradley 1771-P5E Interface Module | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1771-P5E is a power supply interface module designed for use within the PLC-5 I/O chassis system. It provides the critical link between the power supply and the I/O chassis backplane, ensuring stable, regulated power distribution across installed I/O modules. Whether you are maintaining an existing PLC-5 system, sourcing a direct replacement, or evaluating compatible alternatives, this guide covers everything you need to make an informed selection decision.
Technical Specifications
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Part Number: 1771-P5E
- Module Type: Power Supply Interface Module
- Compatible Chassis: 1771 PLC-5 I/O Chassis
- Output Voltage: +5 VDC, ±12 VDC (backplane regulated)
- Input Voltage: 120/240 VAC, 50/60 Hz (power supply dependent)
- Weight: Approx. 1,120 g
- Form Factor: Single-slot chassis module
- Communication: Backplane interface to 1771 I/O chassis
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Relative Humidity: 5% to 95% non-condensing
- Certifications: UL Listed, CE Marked
Compatible Replacement & Equivalent Models
When the original 1771-P5E is unavailable or end-of-life, the following models may serve as functional replacements or equivalents depending on your chassis configuration and power requirements. Always verify electrical and mechanical compatibility before substitution.
- 1771-P4S — Standard power supply interface for 1771 chassis; lower current rating, suitable for smaller I/O configurations
- 1771-P5 — Earlier revision of the P5E; functionally similar but may lack enhanced diagnostics
- 1771-P6S — Higher-capacity interface module for expanded I/O chassis with greater power demand
- 1771-P7 — Redundant power supply interface option for high-availability PLC-5 systems
- Third-party equivalents — Select industrial automation suppliers offer compatible interface modules; confirm backplane pinout, voltage regulation specs, and firmware compatibility before installation
Note: Rockwell Automation has declared the PLC-5 platform end-of-life. Migration to the ControlLogix (1756) or CompactLogix (1769) platform is the recommended long-term path.
Why Choose the Original Model
- Guaranteed Backplane Compatibility: Factory-engineered to match 1771 chassis electrical and mechanical tolerances exactly
- Proven Field Reliability: Decades of deployment in heavy industrial environments with documented MTBF performance
- Rockwell Firmware Alignment: Ensures full compatibility with RSLogix 5 programming software and existing ladder logic programs
- Regulatory Compliance: Ships with original UL/CE certifications, critical for regulated industries (food & beverage, pharmaceutical, utilities)
- Reduced Integration Risk: No re-engineering of I/O wiring, chassis layout, or control program required
Typical Applications
- Automotive assembly line control panels (legacy PLC-5 retrofit maintenance)
- Water and wastewater treatment SCADA systems
- Oil & gas pipeline monitoring and control
- Pulp and paper mill process automation
- Power generation and distribution switchgear control
- Chemical plant batch process controllers
- Mining conveyor and hoisting system PLCs
System Compatibility
| Component | Compatible | Notes |
|---|---|---|
| 1771-A1B Chassis (4-slot) | ✅ Yes | Standard fit |
| 1771-A2B Chassis (8-slot) | ✅ Yes | Standard fit |
| 1771-A3B Chassis (12-slot) | ✅ Yes | Standard fit |
| 1771-A4B Chassis (16-slot) | ✅ Yes | Verify power budget |
| PLC-5/11, 5/20, 5/30, 5/40, 5/60, 5/80 | ✅ Yes | All PLC-5 family processors |
| ControlLogix 1756 Chassis | ❌ No | Different backplane architecture |
| SLC 500 / MicroLogix | ❌ No | Incompatible chassis format |
Selection Guide
Use the following criteria to select the correct power supply interface module for your 1771 chassis:
- Step 1 — Identify chassis slot count: 4, 8, 12, or 16 slots determine the total backplane current draw
- Step 2 — Calculate I/O module power budget: Sum the +5 VDC and ±12 VDC current requirements of all installed modules from their individual datasheets
- Step 3 — Match power supply rating: The 1771-P5E is rated for use with specific Rockwell power supplies — confirm the paired PSU model (e.g., 1771-P5, 1771-P6) meets your calculated load
- Step 4 — Check revision level: Series A vs. Series B revisions may have different firmware compatibility; confirm with your RSLogix 5 version
- Step 5 — Evaluate redundancy needs: For mission-critical systems, consider the 1771-P7 redundant interface option
- Step 6 — Migration assessment: If the system is approaching end-of-life, evaluate ControlLogix migration kits (1756-TBCH, 1756-A7) for a future-proof upgrade path
Quality Assurance & Sourcing
- Source: Konmask.com sources 1771-P5E modules from verified industrial surplus channels, authorized distributors, and factory-refurbished stock
- Inspection: Each unit undergoes visual inspection, functional power-on test, and backplane interface verification before shipment
- Condition Options: New surplus (sealed), refurbished (tested), and used-tested stock available — condition clearly stated on each listing
- Warranty: 90-day replacement warranty on all tested units; extended warranty available on request
- Documentation: Original Rockwell Automation datasheets and installation instructions available upon request
- Export Compliance: All shipments comply with applicable export control regulations (EAR/ECCN classification available)
How to Order
- Online: Add to cart directly from this page — stock availability shown in real time
- Bulk / Project Inquiry: Contact support@konmask.com for volume pricing, kitting, or project-based procurement
- Lead Time: In-stock orders ship within 1–3 business days; sourced orders typically 5–15 business days
- Shipping: Worldwide shipping available; DHL, FedEx, and UPS express options; EXW Xiamen available for freight forwarder customers
- Payment: T/T (wire transfer), PayPal, credit card, and trade credit (approved accounts)
- Custom Kitting: We can bundle the 1771-P5E with compatible chassis, processors, and I/O modules — contact us for a complete BOM quote
Replacement & Compatibility FAQ
Q: Is the 1771-P5E still in production?
A: No. Rockwell Automation has discontinued the PLC-5 platform. The 1771-P5E is available as new surplus, refurbished, or used-tested stock only.
Q: Can I use a 1771-P5 instead of a 1771-P5E?
A: In most cases yes, but the P5E revision includes enhanced diagnostic LEDs and improved thermal management. Verify your chassis and power supply compatibility before substituting.
Q: What is the difference between 1771-P5E Series A and Series B?
A: Series B includes minor hardware revisions for improved EMI immunity. Both are functionally compatible with standard PLC-5 chassis configurations.
Q: Can the 1771-P5E be used in a ControlLogix 1756 chassis?
A: No. The 1756 platform uses a completely different backplane architecture and power supply format. The 1771-P5E is exclusively for the 1771 I/O chassis family.
Q: Do you provide a certificate of conformance (CoC)?
A: Yes. A CoC is available for all tested and refurbished units upon request at time of order.
Q: What is the recommended migration path from PLC-5?
A: Rockwell Automation recommends migrating to the ControlLogix 1756 platform using their Migration Toolkit. Konmask can assist with sourcing 1756 chassis, processors, and I/O modules for your migration project.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
